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33550-56-0

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33550-56-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33550-56-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,5,5 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 33550-56:
(7*3)+(6*3)+(5*5)+(4*5)+(3*0)+(2*5)+(1*6)=100
100 % 10 = 0
So 33550-56-0 is a valid CAS Registry Number.

33550-56-0Relevant articles and documents

Homologation of halostannanes with carbenoids: a convenient and straightforward one-step access to α-functionalized organotin reagents

Touqeer, Saad,Castoldi, Laura,Langer, Thierry,Holzer, Wolfgang,Pace, Vittorio

supporting information, p. 10112 - 10115 (2018/09/13)

A direct, single synthetic homologative transformation of halostannanes into mono- or di-substituted methyl analogues is documented. Critical for the success of the operation is the excellent nucleophilicity of carbenoid-like methyllithium reagents (LiCHXY, X, Y = halogen, OR, and CN): by simply individuating the reagents' substitution pattern, the desired functionalized fragment is delivered to the electrophile. The wide scope of the protocol is evidenced also in the case of analogous halogermanium compounds. The tandem homologation-quenching with nucleophiles and the use of α-chloroallyllithium is also discussed.

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